function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Li, Shu-Qiang & Zonstein, Sergei', 1],
    ['Li, Shuqiang & Zonstein, Sergei', 9],
    ['Lin, Ye-Jie & Yan, Xunyou & Li, Shuqiang', 1],
    ['Lin, Yejie & Li, Shuqiang & Mo, Haolin & Wang, Xihao', 3],
    ['Marusik, Yuri M. & Zamani, Alireza & Mirshamsi, Omid', 2],
    ['Zonstein, Sergei', 7],
    ['Zonstein, Sergei & Kunt, Kadir B. & Yağmur, Ersen A.', 20],
    ['Zonstein, Sergei & Marusik, Yuri M.', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);